It is the definition of keypad that a small board with keys primarily used for tactile input into a machine. Many laptop computers or other
electronical devises have special function keys which turn part of the
alphabetical keyboard into a numerical keypad. There are many good qualities of
control panel manufacturers; Kingley Tech is a professional one based in Taiwan.
Membrane switch or keypads control panel come with a verity application such as, ATM, power suppliers, kiosks, automotive, marine, audio … machine.